AT&T has made some changes to its Data Global Add-On packages. Beginning tomorrow, June 1, AT&T will unveil a new tier of data packages for subscribers who travel outside of the United States.

These are the new data package tiers:

120 MB Data Global Add-on package for $30/month

300 MB Data Global Add-on package for $60/month

800 MB Data Global Add-on package for $120/month

* The overage rate for all packages is $30 for 120MB.

That’s steep given that most AT&T customers pay $30 domestically to get 3 GB of data each month, but it is costly to make roaming agreements with carriers in other countries (and very lucrative for carriers to jack up the price on customers). It typically makes more economic sense to buy a pre-paid SIM from a local company and pop it into your AT&T phone, but that might not always be an available option based on your travel plans.

AT&T subscribers who opt to use the new international plans will get a slightly better rate on roaming data. AT&T has international data service in 135 countries for which the plans apply; pay-per-use data rates will apply if data is consumed outside of the pre-approved countries. Visit Att.com/Global for more information on data options when traveling abroad.

“We want our customers to experience the same level of wireless connectivity while traveling abroad as they do at home. Whether they choose to surf the Internet, use GPS on their device, respond to emails, or update their social network status, we are making it more affordable than ever for them to enjoy data services internationally.”